import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login'
import Home from '../components/Home'
import Welcome from '../components/Welcome'
import Users from '../components/user/Users'

Vue.use(VueRouter)

const routes = [
  { path: '/', redirect: '/login' },
  { path: '/login', name: 'Login', component: Login },
  {
    path: '/Home',
    name: '/Home',
    component: Home,
    redirect: '/Welcome',
    children: [
      { path: '/Welcome', name: '/Welcome', component: Welcome },
      { path: '/Users', name: '/Users', component: Users }
    ]
  }
]
const router = new VueRouter({
  routes
})

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to 将要访问的路径
  // from 代表从那个路径跳转过来
  // next 是一个函数，表示放行
  if (to.path === '/login') return next()
  // 获取tokrn值
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login')
  next()
})

export default router
